Notes Payable (Schedule Notes Payable) (Details) - USD ($) $ in Thousands	Feb. 29, 2020	Nov. 30, 2019	Feb. 01, 2019
Debt Instrument [Line Items]
Mortgages and notes payable	$ 1,749,148	$ 1,748,747
Mortgages and land contracts due to land sellers and other loans
Debt Instrument [Line Items]
Mortgages and notes payable	$ 7,889	7,889
Senior Notes [Member] | 4.75% Senior notes due May 15, 2019 [Member]
Debt Instrument [Line Items]
Senior notes, rate	4.80%
Senior Notes [Member] | 7.00% Senior notes due December 15, 2021 [Member]
Debt Instrument [Line Items]
Senior notes, rate	7.00%
Mortgages and notes payable	$ 448,375	448,164
Senior Notes [Member] | 7.50% Senior notes due September 15, 2022 [Member]
Debt Instrument [Line Items]
Senior notes, rate	7.50%
Mortgages and notes payable	$ 348,408	348,267
Senior Notes [Member] | 7.625% Senior notes due May 15, 2023 [Member]
Debt Instrument [Line Items]
Senior notes, rate	7.625%
Mortgages and notes payable	$ 351,633	351,748
Senior Notes [Member] | 6.875% Senior notes due June 15, 2027 [Member]
Debt Instrument [Line Items]
Senior notes, rate	6.875%
Mortgages and notes payable	$ 296,471	296,379
Senior Notes [Member] | Senior Notes Due Two Thousand Twenty Nine At Four Point Eight Percent [Domain] [Domain]
Debt Instrument [Line Items]
Mortgages and notes payable	$ 296,372	$ 296,300
Convertible Notes Payable [Member] | 1.375% Convertible senior notes due February 1, 2019 [Member]
Debt Instrument [Line Items]
Senior notes, rate			1.375%
Mortgages and notes payable			$ 230,000